Signaling and Safety

REDI – TM64 – Electronic Disc Relay

It is an electronic disc relay designed to be used instead of the traditional electromechanical disc relays or the most recent electronic disc relays.

REDI – TM64 – Electronic Disc Relay

The REDI-TM64 is an electronic disk relay designed to be used instead of the traditional electromechanical relays or the latest electronic disk relays. The REDI-TM64 is based on a 2oo2 microcontroller architecture in diversity that guarantees a SIL4 safety level. The purpose of disk relays is to certify the track circuit occupancy status (BTC), i.e. to signal whether a train is passing over a given rail section. This is done by comparing two electrical signals (local voltage and country voltage) in amplitude, phase and frequency.

The presence of microcontrollers, operating in real time, allows measurements with a high sampling frequency and high accuracy, and makes it possible to evaluate the state of the track circuit accurately and with a high level of safety, even in the presence of strong disturbances induced by the traction current. A sophisticated software algorithm eliminates distortion, noise and disturbance components, guaranteeing REDI intervention in less than 100mS.

The REDI-TM64 is equipped with a user interface that allows the device to be configured in the field (power factor correction using a user-configurable offset, self-reflection adjustment) and to display the most significant parameters of the device (presence of PSK modulation, track circuit status, etc.).

The REDI-TM64 does not require external devices (capacitors) to compensate for any phase shift present in the field.

The REDI-TM64 complies with RFI specification DTCDNSSSTB SR IS 21 028 C.

The REDI-TM64 guarantees a SIL4 safety level according to CENELEC standards 50126; 50129; 50128.

Project Info